document.write( "Question 593697: Last year, Sam had 30,000 to invest. He invested some of it in an account that paid 5% simple interest per year, and he invested the rest in an account that paid 8% simple interest per year. After one year, he received a total of 2040 in interest. How much did he invest in each account? \n" ); document.write( "
Algebra.Com's Answer #376427 by mananth(16946)\"\" \"About 
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Account I 5.00% per annum ---x
\n" ); document.write( "Account II 8.00% per annum ---y
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\n" ); document.write( "x + 1 y= 30000 ------------------------1
\n" ); document.write( "5.00% x + 8.00% y= 2040
\n" ); document.write( "Multiply by 100
\n" ); document.write( "5 x + 8 y= 204000.00 --------2
\n" ); document.write( "Multiply (1) by -5
\n" ); document.write( "we get
\n" ); document.write( "-5 x -5 y= -150000.00
\n" ); document.write( "Add this to (2)
\n" ); document.write( "0 x 3 y= 54000
\n" ); document.write( "divide by 3
\n" ); document.write( " y = 18000 Account I 8.00%
\n" ); document.write( "Balance 12000 Account II 5.00%
\n" ); document.write( "CHECK
\n" ); document.write( "18000 --------- 8.00% ------- 1440.00
\n" ); document.write( "12000 ------- 5.00% ------- 600.00
\n" ); document.write( "Total -------------- 2040.00
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\n" ); document.write( "m.ananth@hotmail.ca
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